iTunes Authorization FAQ
August 25th, 2007
Songs purchased on the iTunes Store can be copied to an unlimited number of computers. However, only five computers at a time can play your iTunes DRM-protected music*.
You can enable a computer to play your purchased music by authorizing it. You can remove a computer from the authorization list by deauthorizing it. Deauthorizing your computer does not erase your music files; it simply prevents your purchased music from playing until you authorize that computer again.
